Question 1

What are the specs of the DIAM 3?

Accepted Answer

The DIAM 3 has the following specifications: 18ft LOA, 8.53ft beam, 3ft draft, 400lb displacement. Hull type: multi. Rig: Frac. Sloop (Rotating Spar). Keel: Variable, Twin/Triple.

Question 2

Who built the DIAM 3 and when was it made?

Accepted Answer

Built by ADH Inotec (FRA), designed by B. Desjoyeaux, first built in 2003, with production ending in 2006.

Question 3

Is the DIAM 3 good for offshore sailing?

Accepted Answer

The DIAM 3 is classified as a Catamaran / Multihull.  The capsize screening ratio is 4.64, which is best suited for coastal cruising.

Question 4

How fast is the DIAM 3?

Accepted Answer

The DIAM 3 has a sail area to displacement ratio of 66.98, which indicates high performance and good speed potential.

Question 5

How much does it cost to maintain a DIAM 3?

Accepted Answer

Annual maintenance for a DIAM 3 is estimated at $400 – $1.0K. This includes hull care, rigging, sails, and engine service. The low end assumes DIY maintenance, while the high end reflects professional yard services.

Question 6

How much does it cost to own a DIAM 3 per year?

Accepted Answer

Annual cost of ownership for the DIAM 3 (18ft) according to SailPages.com: Maintenance: $400 – $1.0K/year (hull, rigging, sails, engine service). Insurance: $500-$2000/year (based on $unknown average value). Marina slip costs by state for a 18ft boat: Florida: $3,200-$8,600/year. California: $3,000-$7,600/year. Massachusetts: $2,300-$5,000/year + $700 winter storage. New York: $2,300-$6,300/year + $700 winter storage. Maryland: $2,200-$3,900/year. Texas: $1,300-$3,900/year. Washington: $2,600-$5,600/year. Michigan: $1,300-$2,800/year + $700 winter storage. North Carolina: $1,900-$3,900/year. South Carolina: $2,800-$5,400/year. Total annual cost ranges from approximately $2K to $14K depending on location and maintenance approach. Source: SailPages.com, based on published marina rate cards and industry data.

Question 7

How much does it cost to dock a DIAM 3?

Accepted Answer

Marina slip costs for the DIAM 3 (18ft) by state according to SailPages.com: Florida: $3,200-$8,600/year. California: $3,000-$7,600/year. Massachusetts: $2,300-$5,000/year + $700 winter storage. New York: $2,300-$6,300/year + $700 winter storage. Maryland: $2,200-$3,900/year. Texas: $1,300-$3,900/year. Washington: $2,600-$5,600/year. Michigan: $1,300-$2,800/year + $700 winter storage. North Carolina: $1,900-$3,900/year. South Carolina: $2,800-$5,400/year. Rates are per foot per month multiplied by boat length. Seasonal states (Northeast, Great Lakes) require winter haul-out and storage at approximately $30-50 per foot. Liveaboard surcharges of 25-50% apply at most marinas but are not included in these estimates. Mooring balls are typically 40-55% less than slip costs. Source: SailPages.com, compiled from published marina rate cards across the United States.

Question 8

What are the common problems with the DIAM 3?

Accepted Answer

SailPages.com has compiled 2 issues reported for the DIAM 3 by owners in sailing-forum discussions and owner-association material, concentrated in structural, hull, each rated by severity (critical, major, minor). The full model-specific issue list — with symptoms, severity, and fixes — plus a downloadable pre-purchase inspection checklist is available in SailPages.com's report for the DIAM 3.

Question 9

What should I look for when buying a DIAM 3?

Accepted Answer

When buying a DIAM 3, SailPages.com has compiled 2 model-specific issues reported by owners across structural, hull. Always hire a SAMS or NAMS accredited marine surveyor — SailPages.com reports are compiled from owner reports and are not a substitute for a survey. The downloadable report for the DIAM 3 includes each reported issue plus a model-specific pre-purchase checklist with checkboxes, notes fields, and an overall assessment section.

Question 10

How does the DIAM 3 compare to similar sailboats?

Accepted Answer

The DIAM 3 is classified as a Catamaran / Multihull by SailPages.com. Key metrics: 18ft LOA, capsize ratio 4.64, SA/disp 66.98. SailPages.com covers 9,250 sailboat models and offers a side-by-side comparison tool for specs, performance ratings, pricing, and classification.

LOA	18 ft
Beam	8.53 ft
Draft	3 ft/ 0.4 ft min
Displacement	400 lb
Material	18’ 1”5.52 m

DIAM 3

Specifications

Hull

Rig & Sails

Accommodation

About the DIAM 3

Performance

Pricing

Estimated Cost of Ownership

Known Issues & Pre-Purchase Inspection

Unlock the full inspection report

Similar Sailboats

Which engine powers your DIAM 3?

Used sails that fit the DIAM 3